Re: re Antenna loading coils / EZnec

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From: Jim Kortge, K8IQY (jokortge@mci2000.com)
Date: Mon Jul 14 1997 - 17:07:02 EDT


At 08:36 PM 7/14/97 +0100, you wrote:
>>Subject: Re: Antenna loading coils
>>
>>>model it. EZNEC will allow one to position the coil reactance
>
>Yes, you can put a coil where you like to but using a long helical coil,
>how do you model that? Example a helical wound vertical or the St Luis
Special.
>
>Saludos
>Goran ea8yu
>
Goran and Gang....I've modelled helically wound antennas by breaking the
coil into several small inductors spaced along the length they
would physically be on the antenna. Don't know whether it is
a valid approach, but it seemed logical, and the EZNEC results
look very plausible.

That's the method I used on the various bicycle mobile antenna
designs that I showed at Dayton last year.

Comments??

72.....Jim

Jim Kortge, K8IQY (ex NU8N) | NorCal, QRP-L
jokortge@mci2000.com | __o H.F. bicycle mobile
Fenton, MI |_`\<, Mizuho 17/40 SSB
.... .. .. . . .. . (*)/(*) . . . . . ..
NorCal 38S Log - 34 States; 40 Countries - Running 3 watts
Most recent - Iowa Mauritius


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